Waterproofing Requirements

[paul75]

Hi, I'm in the process of building retaining walls around an excavated area under our house and I was going to waterproof this myself. The building certifier has said I need to get this professionally waterproofed. But the area is not going to be habitable as it will be a storage room and garage.

What are the rules??? do i have to get this professionally done?? or can I legally do this myself?

[Oldsaltoz]

It all depends on the local area council or planning mob, or the total cost of the project, best to ring the council and tell a mate of yours is thinking about, then see what they advise.

Good luck. :)

[Do it yourself]

Wow talk about red tape!

[stevoh741]

1. How high is the wall? Anything in qld over 1m has to be engineered.
2. What is the wall to be built out of? I assume blocks? If it is over 1m see point 1. If under 1m I'd waterproof myself with a tar/bitumen paint-on waterproofing system. Then I would make sure you get the drainage behind the wall right cause if you don't (won't matter if waterproofed or not) it will fail at some point.

[ringtail]

Why do you have a certifier involved ? If its under 1 mt it doesn't require certification and you can do what you like, unless, of course it is part of a bigger renno.